Use of fenestration to revise shunt dysfunction after transjugular intrahepatic portosystemic shunt.

Abstract

To explore the feasibility of fenestration in the treatment of shunt dysfunction after transjugular intrahepatic portosystemic shunt(TIPS). Between February 2012 and December 2017, 12 TIPS patients with shunt dysfunction underwent fenestration to resolve recurrent portal hypertension with gastric variceal bleeding or ascites. The demographic data, operative data, postoperative recovery data, hemodynamic data, and complications were analyzed. Twelve patients underwent TIPS revision by fenestration, with a technical success rate of 100%. After stent reconstruction, the portal vein diameters decreased gradually with time (before the procedure: at 5days/1month/3months/6months; after procedure: 1.45 ± 0.11cm/1.38 ± 0.06cm/1.36 ± 0.05cm/1.34 ± 0.05cm/1.32 ± 0.06cm, respectively, P = 0.057). Additionally, the blood flow velocity and blood flow rapidly increased in the portal veins and shunts after TIPS revision (P < 0.001). Surprisingly, after 3months of stent reconstruction, the portal blood flow was 4607.99 ± 1304.10mL/min which was even lower than the shunt flow at 4651.18 ± 612.74mL/min. The mean pressure gradient (PSG) prior to TIPS revision was 36.71 ± 3.36mmHg which decreased to 17.42 ± 3.37mmHg after the procedure (P < 0.001). Clinical improvement was observed in all patients after the shunt reconstruction. Three patients (25%) had mild intra-abdominal hemorrhage at 1week after the operation. After a mean 11.0 ± 1.24months follow-up, ascites and bleeding were well controlled, and no stenosis of the stents was found. For patients with failed TIPS revision, fenestration to reconstruct the shunt provides an excellent alternative procedure, which is effective, safe, and has a certain clinical value, for continuing the treatment of portal hypertension.